VHM produces exchangeable cylinder heads for
two-stroke engines in motocross and road racing. With the experience
gained in two-stroke tuning, VHM develops products of high quality.

The combustion chamber is very easy to change, just
untighten the cylinder head, take it off and you can change the
combustion chamber. This makes it very easy to adjust the combustion
ratio to different tracks and fuels that are used. Combustion chambers
are available in different volumes.

During intensive tests, on the racetrack as on the
VHM testbench, the cylinder head showed a better temperature
development in the cylinder head. A lower engine temperature followed.
The explanation of this phenomenon is the use of a special aluminum
alloy which has a very good heat transference. Another advantage of the
material is its resistance to detonation. It's also possible to design
your own combustion chamber, just take a blind combustion chamber and
you can make any type that you want.

Or you can give us the technical information needed
and we produce the insert for you. For more information about custom
made inserts click here.

All the present available
cylinder heads can be found with partnumber and pictures by brand on
this website.

Each cylinder head (partnumber starting with AA33...) comes without the insert.
The insert (part number starting with AE32....) has to be ordered seperately, due to the various options.

Below you will find all cylinder heads we offer.
Click on the type for more information and pictures of the cylinder
head.

Need better throttle response, more torque and power?
VHM upgrade parts for your winning bike, tested and used by many top MX riders!
The VHM 12° billet piston kit must be used with the specific VHM insert mentioned in the chart.